:root {
  --bg: #faf9f6;
  --text: #1f1d1a;
  --muted: #6b665e;
  --line: #e6e2da;
  --accent: #8a5a2b;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #171614; --text: #ece8e1; --muted: #a39d93; --line: #2e2b27; --accent: #d9a46c; }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}
main, header, footer { max-width: 680px; margin: 0 auto; padding: 0 20px; }
header { padding-top: 28px; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
header a.brand { font-weight: 650; font-size: 19px; color: var(--text); text-decoration: none; }
header nav { display: flex; gap: 18px; font-size: 15px; }
a { color: var(--accent); }
header nav a { color: var(--muted); text-decoration: none; }
header nav a:hover, header nav a[aria-current] { color: var(--text); }
h1 { font-size: 34px; line-height: 1.2; letter-spacing: -0.02em; margin: 56px 0 12px; }
h2 { font-size: 21px; margin: 40px 0 8px; letter-spacing: -0.01em; }
h3 { font-size: 17px; margin: 24px 0 4px; }
p, li { color: var(--text); }
.lede { font-size: 20px; color: var(--muted); margin-top: 0; }
.meta { color: var(--muted); font-size: 15px; }
ul { padding-left: 22px; }
li { margin: 4px 0; }
.summary { border: 1px solid var(--line); border-radius: 14px; padding: 4px 20px; margin: 28px 0; }
footer { margin-top: 64px; padding-top: 20px; padding-bottom: 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; display: flex; flex-wrap: wrap; gap: 6px 18px; }
footer a { color: var(--muted); }